Singer Michelle Williams lands three speeding tickets in a week

Former Destiny'S Child star Michelle Williams has been slapped with her third speeding ticket within one week.

The singer has taken to her Twitter.com account to warn fans to "slow down" after being handed an expensive penalty in Los Angeles.

She warns: "Slow down folks! Always give urself (sic) enough time to get somewhere! It's best to arrive early anyway! Early is on time! On time is late!"